邓宗才
    （山东建材学院建工系  济南 250022）

[提要] 通过对Ⅱ、Ⅲ级钢筋混凝土连续梁的对比试验，研究了Ⅲ级钢筋混凝土连续梁的弯矩调幅问题，探讨了不同钢筋型号、不同混凝土受压区高度对调幅限值的影响。试验证明：所有Ⅲ级钢筋混凝土连续梁均达到了充分内力重分布且都满足正常使用要求。本文提出了Ⅲ级钢筋混凝土连续梁的调幅限值及其适用条件。
[关键词] 钢筋混凝土 连续梁 弯矩调幅 塑性分析

An experiment investigation of moment limitation amplitude of continuous beams are conducted by using six bars of two spans continuous beam, which includes four main beams withⅡdegree reinforcment steel, two main beams withⅢdegree reinforcment steel. It is found that the continuous beam with Ⅲ degree steel attained fully anew distribution of moment, and those beams met normal using demands. According to the experiment data, the moment limitation amplitude equation and its adaptrve condition are made out.
Keywords: concrete continuous beam; moment limitation amplitude; elastic-plastic analyse